ilya-tishonok opened a new issue, #11239:
URL: https://github.com/apache/apisix/issues/11239
### Current Behavior
When running Apache APISIX in standalone mode, there seems to be an issue
with the environment variable substitution mechanism where variables with a
common prefix are not correctly recognized. This results in the wrong values
being used for certain configuration settings.
For example for configuration (```apisix.yaml```):
```yaml
organizations_server:
keepalive_pool: ${{ORGANIZATIONS_SERVER_KEEPALIVE_POOL}}
keepalive_timeout: ${{ORGANIZATIONS_SERVER_KEEPALIVE_TIMEOUT}}
keepalive: ${{ORGANIZATIONS_SERVER_KEEPALIVE}}
```
and envs:
```ORGANIZATIONS_SERVER_KEEPALIVE_POOL=60000```
```ORGANIZATIONS_SERVER_KEEPALIVE_TIMEOUT=10000```
```ORGANIZATIONS_SERVER_KEEPALIVE=wrong_value```
values for keepalive_pool and keepalive_timeout are incorrectly populated
with the value of ORGANIZATIONS_SERVER_KEEPALIVE (i.e., ```wrong_value```).
### Expected Behavior
Configuration values should be correctly populated according to their
corresponding environment variables based on unique, fully matched variable
names.
### Error Logs
### Steps to Reproduce
1. Ensure basic config.yaml and apisix.yaml configurations are set up for
APISIX in standalone mode.
2. Modify the configuration to reference environment variables that share
the same prefix but are intended for different settings. For example, include
references to TEST_ENV_CORRECT and TEST_ENV in the configuration as follows:
```yaml
example_config:
correct_value: ${{TEST_ENV_CORRECT}}
base_value: ${{TEST_ENV}}
```
3. Set the environment variables to different values:
```TEST_ENV_CORRECT=expected_value```
```TEST_ENV=base_value```
4. Start APISIX.
### Environment
- Docker image: apache/apisix:3.8.0-debian
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